66606402 ÷ 454 
Our goal is to divide 66606402 by 454.

Advancing to step 1:
454 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 454

On to step 2:
454 goes into 66 0 times with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Take the next digit (6) from the dividend and append it to 66, then repeat: 666 / 454

Advancing to step 3:
When dividing 666 by 454, we get 1 with a remainder of 212.
The next digit of our result is 1. 
Result so far: 1.0
If we take 454 away from 666, we end up with 212.
Append the next digit (0) from the dividend to 212 and continue with: 2120 / 454

Going ahead to step 4:
454 can be fit into 2120 4 times, resulting in a remainder of 304.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 304 after subtracting 1816 from 2120.
Grab the next digit (6) from the dividend, add it to 304, then carry on: 3046 / 454

On to step 5:
If we divide 3046 by 454, we get 6 and a remainder of 322.
Record the quotient 6 as the next digit in the result. 
Result so far: 146.0
Deduct 2724 from 3046 and we're left with 322.
Fetch the next digit (4) from the dividend, attach it to 322 and continue: 3224 / 454

Let's proceed to step 6:
When dividing 3224 by 454, we get 7 with a remainder of 46.
Write down 7 as next digit of the result. 
Result so far: 1467.0
The remainder is 46 after subtracting 3178 from 3224.
Append the next digit (0) from the dividend to 46 and continue with: 460 / 454

Going ahead to step 7:
If we divide 460 by 454, we get 1 and a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 14671.0
Deduct 454 from 460 and we're left with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 454

Going ahead to step 8:
62 divided by 454 is 0 with a remainder of 62.
Write down 0 as next digit of the result. 
Result so far: 146710.0
The remainder is 62 after subtracting 0 from 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 9:
When dividing 620 by 454, we get 1 with a remainder of 166.
The next digit of our result is 1. 
Result so far: 146710.1
If we subtract 454 from 620, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

On to step 10:
The number 454 fits into 1660 3 times, leaving a remainder of 298.
The next digit of our result is 3. 
Result so far: 146710.13
Subtracting 1362 from 1660 leaves us with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Advancing to step 11:
If we divide 2980 by 454, we get 6 and a remainder of 256.
Use 6 as the next digit of our solution. 
Result so far: 146710.136
Subtracting 2724 from 2980 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Going ahead to step 12:
454 goes into 2560 5 times with a remainder of 290.
The number 5 becomes the next digit in our result. 
Result so far: 146710.1365
If we subtract 2270 from 2560, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

On to step 13:
If we divide 2900 by 454, we get 6 and a remainder of 176.
Use 6 as the next digit of our solution. 
Result so far: 146710.13656
If we subtract 2724 from 2900, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 14:
If we divide 1760 by 454, we get 3 and a remainder of 398.
Record the quotient 3 as the next digit in the result. 
Result so far: 146710.136563
Subtract 1362 from 1760 to get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 15:
If we divide 3980 by 454, we get 8 and a remainder of 348.
Use 8 as the next digit of our solution. 
Result so far: 146710.1365638
If we subtract 3632 from 3980, we get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

On to step 16:
454 goes into 3480 7 times with a remainder of 302.
Write down 7 as next digit of the result. 
Result so far: 146710.13656387
If we subtract 3178 from 3480, we get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

The final result is 146710.13656387 with a remainder of 3.02e-07.